Consider the following grammar:

S -> aScB | A | b A -> cA | c B -> A | d 

Here again, we assume lower-case symbols such as a,b,c,d are terminals and upper-case symbols S, A, and B are non-terminals and S is the start symbol. Which of the following sentences are in the language generated by the grammar:

a.) abcd

b.) acccbd

c.) accbcc

d.) acd

e.) accc